Echo SRM-210U Operator's Manual page 17

Shoulder/Waist Harness (P/N 30100052131) Use of the Shoulder/Waist
Harness is required for blade operation, and is recommended for ALL
Trimmer/Brush Cutter use.
The Shoulder/Waist Harness suspends the trimmer from the operator's
shoulder, and reduces operator fatigue during nylon line trimming or
cutting with a blade.
Operator safety is also enhanced by restricting trimmer movement and
preventing blade or line contact with the operator's hands and feet
during operation.
NOTE
In case of Emergency, the trimmer/brushcutter can be released from
the harness by pulling up on the quick-release collar.
G T
RASS RIMMER
O
PERATOR
/B C
RUSH UTTER
' M
S ANUAL
17